Date: Mon, 10 Sep 2012 11:49:31 -0500 From: Alan Cox <alc@rice.edu> To: Andrew Turner <andrew@fubar.geek.nz> Cc: "arm@freebsd.org" <arm@freebsd.org>, Alan Cox <alc@rice.edu> Subject: Re: armv6 pmap patch Message-ID: <504E1A1B.90101@rice.edu> In-Reply-To: <20120910211817.2d8a340d@fubar.geek.nz> References: <504BDC56.3060607@rice.edu> <20120910211817.2d8a340d@fubar.geek.nz>
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On 09/10/2012 04:18, Andrew Turner wrote: > On Sat, 08 Sep 2012 19:01:26 -0500 > Alan Cox<alc@rice.edu> wrote: > >> Can someone here please test this patch to the new armv6 pmap? It >> eliminates the use of the page queues lock and updates some >> comments. Similar changes were recently made to the original arm pmap. >> >> Thanks, >> Alan >> > I have booted FreeBSD with the patch on a Pandaboard and it appears to > work. Are there any tests you would like me to run? > Nothing in particular, since almost anything that you do on the machine will exercise the changed code. There appears to be a lot of unnecessary dropping and reacquiring of locks around UMA calls in both pmap.c and pmap-v6.c. I will try to generate a patch to eliminate this later in the week. Alan
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